Specifications include, but are not limited to: 20" Stand on Scrubber - Nilfisk-Advance SC1500 20" P/N 5610411 / Karcher Chariot Iscrub P/N 1.008.059.0 or Equivalent, Preferred specifications: AGM Battery. On board charger. 24/36 Volt system. Solution/Recover Tank- 9 or more gallon capacity. Standard operating noise level of 70 dBA or less. Preferred total width of 36" or less; 20" Buffer - Renown P/N REN08002 or Equivalent, Preferred specifications: No Fill tank. Minimum RPM of 150; Multi-Surface Cleaner - Advance All Cleaner XP P/N 56381594 / Karcher AP 100/50 M P/N 1.007-080.0 or Equivalent, Preferred specifications: Pump system of at least 500 PSI. Solution tank with at least 15 Gal. Recovery tank with at least 10 Gal.